JBL's Club 10” (250mm) and 12” (300mm) shallow subwoofer enclosure have been engineered using a sealed enclosure with down-firing Club shallow subwoofer and passive radiator. This approach delivers tight, accurate bass performance while taking up minimal space for installation into a broader variety of vehicle types and locations. The enclosure is designed with removable feet which allows for flexible placement direction to get best performance and optimize space per vehicle type. A removable logo badge is included allow you to put anywhere you like. Enclosure's sturdy medium-density fiberboard construction and rugged black carpet covering allows it to resist stacking weight and take a beating. A metal bracket set also provided if customer would like to fix it tight in a vehicle. Down-Firing Sealed Enclosure with a Passive Radiator JBL Club shallow enclosures are engineered with sealed, down-firing type and loaded with a passive radiator subwoofer and new Club shallow subwoofers. Such a design brings tighter, more accurate bass and takes up little space. Technical Specifications Subwoofer: 12” (300mm) Aluminum Driver Power Handling: 400W RMS, 1200W peak Sensitivity (1W/1m): 85dB Frequency Response (-6dB): 30Hz – 400Hz Nominal Impedance: 2 ohms Voice Coil Diameter: 2” (50mm) Enclosure dimensions: 370mm D x 700mm W x 125mm H/ 14-5/8” D x 27-5/8” W x 4-7/8” H Enclosure materials: 3/4” (18mm) MDF with black carpet covering What's in the Box 1x Subwoofer Enclosure 1x JBL Logo Badge 4x Plastic Feet 4x Screw Washer 4x Hexalobular Socket Head M6*25 Screws 1x Quick Start Guide 2x Steel Plate + 8x M5*15 Screws